Animated television static effect, techniques? iPhone shader

Questions & Answers
1

I'm trying to create a television static effect. My best guess is create it using a few images and altering the UV rapidly, put it on a cube or plane in front of the camera, then alter the transparency to fade it in and out.

I would like to ask is this done using a shader? I need to layer 2 or 3 semi-transparent images on top of each other...moving each one in different directions to create the static effect and another layer to create a slow vertical shift.

I'm targeting iPhone so is this a limiting factor creating transparent shaders with 3 layers?

Any ideas on how to achieve this effect would help. THanks.

3

I believe this is what you want. Forget the transparency:

2

When exporting your file to FBX the plugin gives the following error. Can these FBX export warnings have something to do with it?

The plug-in has detected mesh nodes with unsupported operators that affect the vertex and/or face count. To correct this, delete the Non-deformer history before exporting. The following nodes will not be processed: AV_sixpoint6:Group17709